AUTOMATIC METERING SHUT-OFF VALVE 125, 300, & 550 GALLON CAPACITY A TRULY "SMART" VALVE The valve can be set to deliver a preset quantity of water by manually & dialing& the quantity of to be delivered, after which the valve closes automatically. It's innovative design conserves water by metering the flow rather than timing it. Installation and operation of the valve are simple. The valve can be installed in any position, does not require electrical power to function and requires minimal maintenance. It is fabricated from the highest quality materials. The MT Series complies with ISO 7714 Class 3 requirements. Accuracy is better than 2% of the maximum scale value or 4% of the set volume. End connections: 1" male threaded (BSP or NPT)